AnswersTPS EdX BiologyPopulations and the Environment

Pretest Answers

10 verified answers2 views
1
Free Preview

What is an organism’s niche?

A
the competitors and predators of the organism
B
the traits that increase an organism’s survival
C
the role that an organism plays in the environment
D
the physical environment of the organism
2
Free Preview

Which describes a grizzly bear’s habitat?

A
the role of the bear in the ecosystem
B
all the abiotic factors in the ecosystem
C
the physical area where the bear lives
D
all the biotic factors in the ecosystem
3

A rock is classified as

A
nonliving and abiotic.
B
living and biotic.
C
living and abiotic.
D
nonliving and biotic.
4

Which principle states that two species in the same habitat cannot have the same niche?

A
competitive exclusion principle
B
niche exclusion principle
C
population exclusion principle
D
habitat exclusion principle
6

Which describes the habitat of a frog?

A
eats insects
B
prey for snakes
C
marshes and ponds
D
color for camouflage
7

Which is a biotic factor?

A
fire
B
rock
C
drop of water
D
rotting carcass
8

Which is biotic?

A
water
B
soil
C
leaf
D
snow
9

Why is a shell considered to be biotic?

A
because it is not living
B
because it came from something living
C
because it is found in the biosphere
D
because it was alive

Did you find these answers helpful?

Pretest Answers — TPS EdX Biology